4006718857 has 16 divisors (see below), whose sum is σ = 4165272720. Its totient is φ = 3852040192.

The previous prime is 4006718819. The next prime is 4006718861. The reversal of 4006718857 is 7588176004.

It can be written as a sum of positive squares in 8 ways, for example, as 50183056 + 3956535801 = 7084^2 + 62901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4006718857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4006718867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529263 + ... + 536779.

It is an arithmetic number, because the mean of its divisors is an integer number (260329545).

Almost surely, 2^4006718857 is an apocalyptic number.

It is an amenable number.

4006718857 is a deficient number, since it is larger than the sum of its proper divisors (158553863).

4006718857 is a wasteful number, since it uses less digits than its factorization.

4006718857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7772.

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 4006718857 is about 63298.6481451223. The cubic root of 4006718857 is about 1588.2893481816.

The spelling of 4006718857 in words is "four billion, six million, seven hundred eighteen thousand, eight hundred fifty-seven".